91664792 has 16 divisors (see below), whose sum is σ = 172216800. Its totient is φ = 45740320.

The previous prime is 91664791. The next prime is 91664827. The reversal of 91664792 is 29746619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91664791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7184 + ... + 15327.

It is an arithmetic number, because the mean of its divisors is an integer number (10763550).

Almost surely, 2^91664792 is an apocalyptic number.

It is an amenable number.

91664792 is a deficient number, since it is larger than the sum of its proper divisors (80552008).

91664792 is a wasteful number, since it uses less digits than its factorization.

91664792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23026 (or 23022 counting only the distinct ones).

The product of its digits is 163296, while the sum is 44.

The square root of 91664792 is about 9574.1731757891. The cubic root of 91664792 is about 450.8867977757.

The spelling of 91664792 in words is "ninety-one million, six hundred sixty-four thousand, seven hundred ninety-two".